polar


function tempalte
<complex> 
template<class T> complex<T> polar (const T& rho, const T& theta = 0);

Return complex from polar components

Returns a complex object (in cartesian format) corresponding to the complex number defined by its polar components rho and theta, where rho is the magnitude (modulus) and theta is the phase angle. The values in the return value are the same as if:

1
2
 
real = rho * cos(theta);
imag = rho * sin(theta);


Parameters

rho
Magnitude (modulus) of the complex number.
T is complex<T>'s template type (i.e., its value type).
theta
Phase angle (angular component) of the complex number.
T is complex<T>'s template type (i.e., its value type).


Return value

The complex cartesian equivalent to the polar format formed by rho and theta.

Example

1
2
3
4
5
6
7
8
9
10
11
12
13
 
// polar example
#include <iostream>
#include <complex>
using namespace std;

int main ()
{
  cout << "The complex whose magnitude is " << 2.0;
  cout << " and phase angle is " << 0.5;
  cout << " is " << polar (2.0, 0.5) << endl;

  return 0;
}


Output:

The complex whose magnitude is 2 and phase angle is 0.5 is (1.75517,0.958851)


See also

abs Return absolute value of complex (function template)
arg Return phase angle of complex (function template)